dry scalp?

I love having natural hair but what I have noticed is that my scalp is a lot drier. For christmas I sttraightened my hair and I love it. I got a hair cut a few weeks before because I was still transitioning. My hair is thicker and healthier like it was when I was a child but my scalp is dry not severely dry but kinda itchy dry. Is there anything I can do? before I straighten? or is there a certain oil I can use? please help everything is appreciated.